讓背景如此暗淡（一種彈出提示信息時頁面背景色調改變的方法

2024-09-06 12:44:45

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這個效果前些日子有人在論壇問起，今天有空研究了下。我打了原創標記，因為我在寫這個方法時的確沒有參考過別人的代碼。我的方法其實就是層遮罩加ALPHA濾鏡實現預期效果。

<head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>提示信息框</title> <style type="text/css"> a{ color:#000; font-size:12px;text-decoration:none} a:hover{ color:#900; text-decoration:underline} body{background:;filter:progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=#ffffff,endColorStr=#003366); overflow:hidden} #massage_box{ position:absolute;  left:expression((body.clientWidth-350)/2); top:expression((body.clientHeight-200)/2); width:350px; height:200px;filter:dropshadow(color=#666666,offx=3,offy=3,positive=2); z-index:2; visibility:hidden} #mask{ position:absolute; top:0; left:0; width:expression(body.clientWidth); height:expression(body.clientHeight); background:#666; filter:ALPHA(opacity=60); z-index:1; visibility:hidden} .massage{border:#036 solid; border-width:1 1 3 1; width:95%; height:95%; background:#fff; color:#036; font-size:12px; line-height:150%} .header{background:#036; height:10%; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; padding:3 5 0 5; color:#fff} </style> </head><body>  本站提示信息 × <ul style="margin-right:25"> 本人申明此博客所有文章（包括文章插圖）均為原創，如需引用或轉載請注明出處。  歡迎大家對博文中觀點留言評述，謝絕無聊人士無素質無觀點的灌水漫罵。本站已設背景音樂，聽音樂盒中收集的音樂時請先到頁面底部關閉背景音樂。  顯示提示信息 </body> </html>

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<head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>提示信息框</title> <style type="text/css"> a{ color:#000; font-size:12px;text-decoration:none} a:hover{ color:#900; text-decoration:underline} body{background:;filter:progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=#ffffff,endColorStr=#003366); overflow:hidden} #massage_box{ position:absolute;  left:expression((body.clientWidth-350)/2); top:expression((body.clientHeight-200)/2); width:350px; height:200px;filter:dropshadow(color=#666666,offx=3,offy=3,positive=2); z-index:2; visibility:hidden} #mask{ position:absolute; top:0; left:0; width:expression(body.clientWidth); height:expression(body.clientHeight); background:#666; filter:ALPHA(opacity=60); z-index:1; visibility:hidden} .massage{border:#036 solid; border-width:1 1 3 1; width:95%; height:95%; background:#fff; color:#036; font-size:12px; line-height:150%} .header{background:#036; height:10%; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; padding:3 5 0 5; color:#fff}             </SPAN>
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